2007 NISSAN 350Z engine

TROUBLE DIAGNOSIS
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EC
Revision: 2006 November2007 350Z
DTC Inspection Priority ChartNBS0003E
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:

If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-151, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC U1010 is displayed with other DTC, first perform the diagnosis for DTC U1010.
Refer to EC-154, "
DTC U1010 CAN COMMUNICATION".
Priority Detected items (DTC)
1

U1000 U1001 CAN communication line

U1010 CAN communication

P0101 P0102 P0103 P010B P010C P010D Mass air flow sensor

P0112 P0113 P0127 Intake air temperature sensor

P0117 P0118 P0125 Engine coolant temperature sensor

P0122 P0123 P0222 P0223 P0227 P0228 P1225 P1226 P1234 P1235 P1239 P2132 P2133 P2135 Throttle position
sensor

P0128 Thermostat function

P0181 P0182 P0183 Fuel tank temperature sensor

P0196 P0197 P0198 Engine oil temperature sensor

P0327 P0328 P0332 P0333 Knock sensor

P0335 Crankshaft position sensor (POS)

P0340 P0345 Camshaft position sensor (PHASE)

P0460 P0461 P0462 P0463 Fuel level sensor

P0500 Vehicle speed sensor

P0605 ECM

P0643 Sensor power supply

P0700 TCM

P0705 P0850 Park/neutral position (PNP) switch

P1610 - P1615 NATS

P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor

EC-88
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
2
P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater

P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater

P0075 P0081 Intake valve timing control solenoid valve

P0078 P0084 Exhaust valve timing control magnet retarder*

P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1

P0137 P0138 P0139 P0158 P0159 Heated oxygen sensor 2

P0441 EVAP control system purge flow monitoring

P0443 P0444 P0445 EVAP canister purge volume control solenoid valve

P0447 P0448 EVAP canister vent control valve

P0451 P0452 P0453 EVAP control system pressure sensor

P0550 Power steering pressure sensor

P0603 ECM power supply

P0710 P0717 P0720 P0731 P0732 P0733 P0734 P0735 P0740 P0744 P0745 P1730 P1752 P1757 P1762 P1767
P1772 P1774 A/T related sensors, solenoid valves and switches

P1078 P1084 Exhaust valve timing control position sensor

P1217 Engine over temperature (OVERHEAT)

P1233 P2101 Electric throttle control function

P1236 P2118 Throttle control motor

P1290 P2103 P2103 Throttle control motor relay

P1805 Brake switch
3

P0011 P0021 Intake valve timing control

P0014 P0024 Exhaust valve timing control*

P0171 P0172 P0174 P0175 Fuel injection system function

P0300 - P0306 Misfire

P0420 P0430 Three way catalyst function

P0442 EVAP control system (SMALL LEAK)

P0455 EVAP control system (GROSS LEAK)

P0456 EVAP control system (VERY SMALL LEAK)

P0506 P0507 Idle speed control system

P1148 P1168 Closed loop control

P1211 TCS control unit

P1212 TCS communication line

P1238 P2119 Electric throttle control actuator

P1421 Cold start control

P1564 ASCD steering switch

P1572 ASCD brake switch

P1574 ASCD vehicle speed sensor

P1715 Turbine revolution sensor Priority Detected items (DTC)

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
Fail-safe ChartNBS0003F
When the DTC listed below is detected, the ECM enters fail-safe mode and the MIL lights up.
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103
P010C
P010DMass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning
ignition switch ON or START.
CONSULT-III displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned
ON or START40°C (104°F)
More than approx. 4 minutes after
ignition ON or START80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P0227
P0228
P1239
P2132
P2133
P2135Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.
P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1233
P2101Electric throttle control
functionECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1236
P2118Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1238
P2119Electric throttle control
actuator(When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops,
the engine stalls.
The engine can restart in N or P (A/T), Neutral (M/T) position, and engine speed will not
exceed 1,000 rpm or more.
P1290
P2100
P2103Throttle control motor relay
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2122
P2123
P2127
P2128
P2138Accelerator pedal position
sensorThe ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.

EC-90
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when
there is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected
as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands
the driver to repair the malfunction.
Symptom Matrix ChartNBS0003G
SYSTEM — BASIC ENGINE CONTROL SYSTEM
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 11232 22 3 2EC-691
Fuel pressure regulator system334444444 4EC-80
Fuel injector circuit 11232 22 2EC-686
Evaporative emission system 334444444 4EC-33
Air Positive crankcase ventilation sys-
tem
334444444 41EC-44
Incorrect idle speed adjustment 1 1 1 1 1EC-71
Electric throttle control actuator 112332222 2 2EC-561,
EC-580
IgnitionIncorrect ignition timing adjustment33111 11 1EC-71
Ignition circuit 11222 22 2EC-698
Power supply and ground circuit22333 33 23EC-142

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
1 - 6: The numbers refer to the order of inspection.
(continued on next page)Mass air flow sensor circuit
1
122
222 2EC-197
,
EC-208
Engine coolant temperature sensor circuit
333EC-223,
EC-239
Air fuel ratio (A/F) sensor 1 circuitEC-165
,
EC-248
,
EC-257
,
EC-266
,
EC-275
,
EC-659
Throttle position sensor circuit
22EC-229
,
EC-361
,
EC-557
,
EC-559
,
EC-582
Accelerator pedal position sensor circuit 3 2 1EC-514
,
EC-633
,
EC-641
,
EC-650
Knock sensor circuit 2 3EC-379
Crankshaft position sensor (POS) circuit 2 2EC-386
Camshaft position sensor (PHASE) circuit 3 2EC-394
Vehicle speed signal circuit 2 3 3 3EC-496
Power steering pressure sensor circuit 2 3 3EC-502
ECM 22333333333EC-508,
EC-512
Intake valve timing control solenoid valve cir-
cuit32 13223 3EC-183
Exhaust valve timing control magnet retarder
circuit32 13223 3EC-160
Park/neutral position (PNP) switch circuit 3 3 3 3 3EC-520
Refrigerant pressure sensor circuit 2 3 3 4EC-710
Electrical load signal circuit 3EC-684
Air conditioner circuit223333333 3 2AT C - 3 3
VDC/TCS/ABS control unit
ABS actuator and electric unit (control unit)4BRC-82,
BRC-42
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-92
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FL-10
Fuel piping 5 5 5 5 5 5EM-34
Vapor lock—
Valve deposit
5 555 55 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—
Air Air duct
55555 5EM-15
Air cleanerEM-15
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
5555EM-15
Electric throttle control actuatorEM-17
Air leakage from intake manifold/
Collector/GasketEM-17,
EM-20
Cranking Battery
111111
11SC-4
Generator circuitSC-20
Starter circuit 3SC-8
Signal plate 6EM-107
Park/neutral position (PNP)
switch4MT-11 or
AT- 1 0 2
Engine Cylinder head
55555 55 5EM-89
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-107
Piston
Piston ring
Connecting rod
Bearing
Crankshaft

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
1 - 6: The numbers refer to the order of inspection.Va l v e
mecha-
nismTiming chain
55555 55 5EM-53
CamshaftEM-72
Intake valve timing controlEM-53
Exhaust valve timing controlEM-53
Intake valve
3EM-89
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-22
, EX-
3Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
55555 55 5EM-26
, LU-
10 , LU-9
Oil level (Low)/Filthy oilLU-6
Cooling
Radiator/Hose/Radiator filler cap
55555 55 45CO-13,
CO-17
Thermostat 5CO-26
Water pumpCO-23
Water galleryCO-28
Cooling fan 5CO-21
Coolant level (Low)/Contami-
nated coolantCO-10
NVIS (NISSAN Vehicle Immobilizer System —
NATS)11EC-46 or
BL-150
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-94
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Engine Control Component Parts LocationNBS0003I
1. IPDM E/R 2. Mass air flow sensor (with intake air
temperature sensor) (bank 1)3. Refrigerant pressure sensor
4. Cooling fan motor-2 5. Intake valve timing control solenoid
valve6. Exhaust valve timing control magnet
retarder
7. Cooling fan motor-1 8. Mass air flow sensor (with intake air
temperature sensor) (bank 2)9. Ignition coil (with power transistor)
and spark plug (bank 2)
10. Electric throttle control actuator
(bank 2)11. A/F sensor 1 (bank 2) 12. Exhaust valve timing control position
sensor
13. Camshaft position sensor (PHASE) 14. Fuel injector (bank 2) 15. Engine coolant temperature sensor
16. Knock sensor 17. EVAP canister purge volume con-
trol solenoid valve18. Fuel injector (bank 1)
19. Ignition coil (with power transistor)
and spark plug (bank 1)20. EVAP service port 21. A/F sensor 1 (bank 1)
22. Crankshaft position sensor (POS) 23. Electric throttle control actuator
(bank 1)
PBIB3474E